Updated Readme.md

[hemantwasthere]

Why:

Wanted to know about contributing, this is my first time 🙃

What's being changed :

The thing is being changed is I have added a single quote for looking that word better
Changed word is "Readmes" to "Readme's" 🙃

Check off the following:

• I have reviewed my changes in staging (look for the "Automatically generated comment" and click the links in the "Preview" column to view your latest changes).
• For content changes, I have completed the self-review checklist.

Writer impact (This section is for GitHub staff members only):

• This pull request impacts the contribution experience
  • I have added the 'writer impact' label
  • I have added a description and/or a video demo of the changes below (e.g. a "before and after video")

[welcome]

Thanks for opening this pull request! A GitHub docs team member should be by to give feedback soon. In the meantime, please check out the contributing guidelines.

[cmwilson21]

@Hemant-0000 Thanks for opening a PR! ⚡ In this case, READMEs is the plural form of README and is consistent with the rest of our site, so we are going to leave it as it is.

Take a look at the contributing.md to learn how to contribute in this repo. You can open a discussion if you have any questions or check out issues with the help wanted label.

Thank you for your passion in improving GitHub Docs! 💖